Is this for real? Link pls
If it did happen spontaneously and u didnt get asked to pay extra
Id say she either really likes you, possible if ur a regular....
or she felt safe enuff with u to let off some steam and u just happened to be there when she was horny.....
or she does this with everyone?
Have u spoken since?
Next time u visit, just play cool, and see if she says anything or initiates it again?
Id also get urself tested for peace of mind..but ud need to wait a couple of weeks before u do, as some tests cant be done straight away
And seeing as ur her regular source of income,id say probly low risk, as she wldnt want to ruin a good thing